Kurt Kinetic Turntable Riser Ring T-750C-S

"The Kinetic Turntable Riser Ring is adjustable to four heights to simulate flat roads on almost any bike. Sits under front tires for a stable ride, no matter how hard or long the workout. In addition it allows the front wheel to steer, a must-have for anyone training with the Kinetic Rock and Roll.

Features:
4 heights to fine tune your ride position: 1.27cm, 2.54cm, 3.8cm, 5cm
PVC construction for a lifetime of use
Fits tires up to 2.25 inch"